pic microcontroller discussion list <> wrote:
> mixer that sums up some line level signals. The ideal situation would
> be to now have a balanced line receiver/preamp module that bumps the
> level up to match the line inputs. Then I just do the opamp summing
> mixer and I'm good to go.

Have a look at the Analog Devices SSM2016/SSM2017 (one of those part
numbers should be right, IIRC).  They're not cheap, but I've used them in
the past for quick and easy balanced inputs and outputs.  If you're not
experienced in opamp design and this is a one-off, I'd recommend them
highly.

Nigel
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